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"""
.. codeauthor:: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
"""
from ._checker import CheckerFactory, TypeCheckerBase, TypeCheckerDelegator
from ._common import isinf, isstring
class InfinityCheckerStrictLevel0(TypeCheckerBase):
def is_instance(self):
return isinf(self._value)
def is_valid_after_convert(self, converted_value):
try:
return converted_value.is_infinite()
except AttributeError:
return False
class InfinityCheckerStrictLevel1(InfinityCheckerStrictLevel0):
def is_exclude_instance(self):
return isstring(self._value)
_factory = CheckerFactory(
checker_mapping={0: InfinityCheckerStrictLevel0, 1: InfinityCheckerStrictLevel1}
)
class InfinityTypeChecker(TypeCheckerDelegator):
def __init__(self, value, strict_level):
super().__init__(value=value, checker_factory=_factory, strict_level=strict_level)
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